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Search results for nitrogen deposition
Airborne nitrogen shifts aquatic nutrient limitation in pristine lakes
Space & Earth / Earth Sciences
Nov 05, 2009 |
3.3 / 5 (4) |
3
The impact of airborne nitrogen released from the burning of fossil fuels and wide-spread use of fertilizers in agriculture is much greater that previously recognized and even extends to remote alpine lakes, ...
Acid soils in Slovakia tell somber tale
Space & Earth / Earth Sciences
Nov 17, 2008 |
3 / 5 (4) |
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Increasing levels of nitrogen deposition associated with industry and agriculture can drive soils toward a toxic level of acidification, reducing plant growth and polluting surface waters, according to a new study published ...
Elevated CO2 levels may mitigate losses of biodiversity from nitrogen pollution
Dec 03, 2009 |
3.7 / 5 (7) |
2
Rising levels of carbon dioxide may overheat the planet and cause other environmental problems, but fears that rising CO2 levels could directly reduce plant biodiversity can be allayed, according to a new study by a University ...
Tree species composition influences nitrogen loss from forests
Mar 16, 2009 |
not rated yet |
0
Throughout the world, nitrogen compounds are released to the atmosphere from agricultural activities and combustion of fossil fuels. These pollutants are deposited to ecosystems as precipitation, gases, and particles, sometimes ...
Nitrogen -- the silent species eliminator
Oct 12, 2007 |
4.3 / 5 (7) |
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Nitrogen pollution from agriculture and fossil fuels is known to be seriously damaging grasslands in the UK. A new European study is starting to show that the effect is Europe-wide, confirming that current policies to protect ...
Human activities increasing carbon sequestration in forests
Space & Earth / Earth Sciences
Jun 13, 2007 |
3.5 / 5 (8) |
1
Human-caused nitrogen deposition has been indirectly “fertilizing” forests, increasing their growth and sequestering major amounts of carbon, a new study in the journal Nature suggests.
Forest canopies help determine natural fertilization rates
Space & Earth / Earth Sciences
May 29, 2008 |
4.7 / 5 (3) |
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In this week’s issue of Science, a team of researchers from the United States and Sweden report on a newly identified factor that controls the natural input of new nitrogen into boreal forest ecosystems. Nitrogen is the ...
Forest canopies help determine natural fertilization rates
May 30, 2008 |
4.9 / 5 (7) |
0
In this week's issue of Science, a team of researchers from the United States and Sweden report on a newly identified factor that controls the natural input of new nitrogen into boreal forest ecosystems.
Air monitoring helps anticipate possible ecosystem changes
Jun 25, 2008 |
3.5 / 5 (2) |
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When rain settles the atmosphere and brings air pollutants to the ground, it can have a lasting effect on ecosystems, sometimes hundreds of miles away, according to a Texas AgriLife Research agricultural engineer.
EPA says sulfur dioxide emissions are down
Nov 17, 2007 |
4.2 / 5 (5) |
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U.S. officials say efforts to decrease sulfur dioxide emissions from power companies have resulted in a 40 percent reduction since 1990.
Lichens function as indicators of nitrogen pollution in forests
Oct 06, 2008 |
3.3 / 5 (3) |
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Scientists have found lichens can give insight into nitrogen air pollution effects on Sierra Nevada and San Bernardino mountain ecosystems, and protecting them provides safeguards for less sensitive species.
Dust deposited in oceans may carry elements toxic to marine algae
Space & Earth / Earth Sciences
Mar 09, 2009 |
5 / 5 (3) |
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(PhysOrg.com) -- Dust blown off the continents and deposited in the open ocean is an important source of nutrients for marine phytoplankton, the tiny algae that are the foundation of the ocean food web. But ...
Is nitrogen the new carbon?
Sep 21, 2009 |
2 / 5 (1) |
3
In looking forward to the next Green Revolution, researchers have been carefully examining the role of nitrogen fixation in delivering successful crops around the globe.
UC Riverside hydrologist to study ecological impact of climate change on mountain lakes
Space & Earth / Earth Sciences
Aug 29, 2007 |
4.6 / 5 (8) |
0
How does climate change affect the rate of atmospheric deposition of nutrients – elements or compounds essential to the growth and survival of organisms – into mountain lakes? And how do increases in the deposition ...
Nitrogen deposition limits climate change impacts on carbon sequestration
Oct 07, 2009 |
3.5 / 5 (6) |
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Forests are important in reducing the green house gas CO2. For the period 2000-2007, it has been estimated that from the 8.9 billion ton of carbon released by man, approximately 46% is found back in the atmosphere. ...
